DE7424640U - ELECTRIC MOTOR WITH ADDITIONAL PARTS ATTACHED TO THE PERIOD OF THE ENGINE HOUSING - Google Patents

Description

Hanning Elektro-Werke Robert Hanning, 48 Bielefeld

Electric motor with additional parts attached to the circumference of the motor housing

C The invention relates to electric motors with the circumference of Additional parts attached to the motor housing, such as the at Single-phase motors for generating the rotating field necessary capacitors as well as connection boxes, switches, motor stands, Engine mounts and the like. The assembly of such additional parts is generally carried out by means of radial in the motor housing introduced screws, for which this must always be provided with appropriate threaded holes. To save these threaded holes and thus the manufacturing

{ reducing costs is the main aim of the invention. In addition, the attachment of the additional parts, which was previously dependent on the position of the threaded holes on the motor housing, is to be made more variable.

In solving the problem posed, the invention is made known by the German utility model 1 971 614 The possibility that has become use to produce the motor housing in the extrusion process from light metal. she wants ■ the resulting from this manufacturing method

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Use advantages even more extensively than is the case with the construction shown there. This uses namely for fastening a connection cap provided on the side of the motor housing to cover the cable entry in turn, screw bolts proceeding radially from the motor housing, which has the disadvantages already mentioned for production brings with it.

Based on the aforementioned prior art, the suggests Invention an electric motor with attached to the periphery of the motor housing additional parts, the motor housing manufactured in the extrusion process from light metal and which is characterized in that on the flanks of Longitudinal ribs formed radially on the motor housing in pairs run in oppositely opened longitudinal grooves, in which the additional part to be fastened to the motor housing or a fastening element serving its holder likewise oppositely directed legs engages. It is useful if the "in the .Längsnuten engaging legs with the help of transversely to the longitudinal grooves acting on them screws on the longitudinal ribs are tense. Clamps used as a fastening element for the additional part can also be resilient and optionally be designed with spreading legs.

As a second solution to the problem according to the invention, it is proposed that that this is done in a known manner in the extrusion

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drive motor housing made of light metal at least one laterally undercut on its outer surface Has longitudinal groove, in the undercut of which the nut or the head of the additional part on the motor housing holding fastening screw is inserted. Instead of the one used in the undercut of the longitudinal groove Nut can also be actuated by a fastening screw, possibly in one piece with the additional part The expansion dowel produced is inserted into the laterally undercut longitudinal groove and possibly the one from the undercut the longitudinal groove recorded part to be designed to be knee-shaped.

With the invention it is possible for the subsequent attachment of radial bores in the motor housing for attachment of additional parts required work process to be saved and, as a result, the intended cost reduction to reach. The simplifications made for the assembly process of the additional parts also contribute to this. Furthermore, the invention enables the desired freedom of movement in the attachment of various additional parts to the motor housing.

An embodiment of the invention is explained below with reference to the drawing.

Half of the motor housing of an electric motor shown in cross section is made of light metal in an extrusion process manufactured. In its scope, as additional parts

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for the electric motor a capacitor 2, one the clamping screws 3 covering junction box 4 and a stand 21 be attached.

For fastening the capacitor 2, two of the radially on the motor housing 1 are provided as cooling fins on the outer flanks molded longitudinal ribs 5 oppositely open longitudinal grooves 6 and 7 are provided. In these longitudinal grooves 6 and 7 also grip oppositely directed C legs 8 and 9 of a capacitor 2 enclosing the ends Ring in Io. One that penetrates the legs 8 and 9 and acts on them transversely to the longitudinal grooves 6 and 7 Screw 11 braces the legs 8 and 9 on the longitudinal ribs 5 and at the same time pulls the clamp around the Io Capacitor 2 fixed. In this way, the capacitor becomes very good and insensitive to vibrations with very little effort Granted hold on the motor housing 1.

Likewise, it would be within the scope of the invention, the Γ

the holder of the capacitor 2 serving clamp Io for the purpose Saving the screw 11 resiliently and possibly to form with spreading legs, the ends of which then in two on the mutually facing flanks of the longitudinal ribs 5 running longitudinal grooves would have to engage.

To fasten the connection box 4, two in the area of a base 12 in the lateral surface of the motor housing 1 are used laterally undercut longitudinal grooves 13 and 14. In the undercut 15 of the upper longitudinal groove 13 is the

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Nut 16 of a fastening screw holding the connection box 4 17 inserted · In the case of the lower Lsngsnut 14, this nut 16 is replaced by an expansion dowel 18, which presses into the undercut 19 there when the fastening screw 2o is screwed into it.

The expansion dowels 18 could be parts of the connection box 4, if the connection box 4 is made of plastic or light metal. Furthermore, it would be conceivable that the * undercut longitudinal groove 13 or 14 accommodated part kn: -; to be designed in a belly shape, with which one would have the possibility of to be able to introduce this transversely to the groove direction.

Further undercut longitudinal grooves 22 similar to the longitudinal grooves 13 and 14 are located in a second mounting base of the motor housing 1, which is arranged offset from the base 12 by 90 °. These longitudinal grooves 22 are for fastening the preferably also determined by the extrusion process from light metal base 21 and take this the expansion flanges 24 formed on it. When tightening the plate 25 of the base 21 penetrating Fastening screws 26, the expansion flanges 24 are pressed apart and in the undercut 27 of the Longitudinal grooves 22 set.

With the stand 21 supplied as a single part, the installation of the electric motor is more permissive than in the case of direct on the motor housing 1 attached feet. The electric motor can thus be both using the

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Mount the base 21 as well as without this, or instead of the base 21, a motor suspension could also be used as desired Kind are used.

If you wanted to attach the motor housing 1 without the base 21 in a device, it would be most useful the mounting base 23 is attached, because this significantly reduces the installation height of the motor »The Fastening screws 26, like screws 17 and 2o, would then be introduced into the longitudinal grooves 22 of the motor housing Fix nuts or expansion anchors in the mounting base 23.

If the longitudinal grooves 13, 14 and 22 had the same cross section and the same spacing in the bases 12 and 23, there would be Furthermore, the possibility of the connection box 4 or the base 21 optionally on the base 12 or the base 23 to arrange, which would increase the versatility of the construction according to the invention.

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Claims (7)

1121 Hanning Elektro-Werke Robert Harming, 48 Bielefeld Protection claims 1.) Electric motor with additional parts attached to the circumference of the motor housing, the motor housing being extruded is made of light metal, characterized · that an.den planks radially longitudinal ribs (5) formed on the motor housing (1), longitudinal grooves open in opposite directions in pairs (6, 7) into which the additional part (capacitor 2) or a ■ Γ fastening element used to hold it (Clamp 10) engages with likewise oppositely directed legs (8, 9). 2.) Electric motor according to claim 1, characterized in that the engaging in the longitudinal grooves (6, 7) Legs (8, 9) with the help of transversely to the longitudinal grooves (6, 7) acting on them screws (11) on the Longitudinal ribs (5) are braced. - A2 - 7424640 12/11/75 - A2 - 1121 3.) Electric motor ^ nach_Anspruch 1 or 2, characterized in that that as a fastening element "! ^? the additional part (capacitor 2) used clamps (10) resiliently and optionally are formed with spreading legs (8, 9). 4) Electric motor according to the preamble of claim 1, characterized in that the motor housing (1) on its lateral surface has at least one laterally undercut longitudinal groove (13), in the> ~ - Ilintf.rschnenung (15) the nut (16) or the head of one of the accessories (junction box .4) on the motor housing (1) holding fastening screw (17) is inserted. 5) Electric motor according to claim 4, characterized in that that ans.belle the nut (16) one by a fastening screw (20) actuated expansion anchor (18) inserted into the laterally undercut longitudinal groove (14) is. 6.) Electric motor according to claim 5, characterized in that that actuated by a fastening screw (26), inserted into laterally undercut longitudinal grooves (22) e Sp rc iz flanges (24) to the additional part (l, "o gate stand foot 21) are molded on. 7424640 11.1175 -A3 - 1121 ^: 7.) Electric motor according to one of claims 4 to 6, characterized in that the undercut of the Longitudinal groove recorded part is designed to be knee-shaped. 7424640 ii.i2.75